Non-elevated Services
Non-elevated approach provides “different but equal” QoS to its classes.
Properties of non-elevated service model:
- offers weak QoS guarantees,
- retain simplicity of current best-effort Internet,
- no policing and little operational change,
- can be deployed incrementally,
- flat pricing can be applied.
Usually employ tradeoff between delay and loss rate
Proposed non-elevated architectures:
- Alternative Best-Effort (ABE) [Hurley, Le Boudec, 2001]
- Best-Effort Differentiated Services (BEDS) [Firoiu, 2001]
- Equivalent Differentiated Services (EDS) [Gaidioz, 2002]
- QBone Scavenger Service (QBSS) [Internet2 QoS WG, 2001]